Global Patent Index - EP 4247868 A1

EP 4247868 A1 20230927 - PROCESS FOR MANUFACTURING A FLUOROPOLYMER

Title (en)

PROCESS FOR MANUFACTURING A FLUOROPOLYMER

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES FLUORPOLYMERS

Title (fr)

PROCÉDÉ DE FABRICATION D'UN FLUOROPOLYMÈRE

Publication

EP 4247868 A1 20230927 (EN)

Application

EP 21810629 A 20211119

Priority

  • EP 20209167 A 20201123
  • EP 2021082284 W 20211119

Abstract (en)

[origin: WO2022106610A1] The present invention pertains to a surfactant free method for manufacturing a fluoropolymer F comprising, preferably consisting of: - from 45 to 95 % by moles of recurring units derived from tetrafluoroethylene (TFE) - from 5 to 35 % by moles of recurring units derived from vinylidene fluoride (VDF) - from 0.5 to 20 % by moles of one or more perfluoroalkylvinylether (PAVE) of formula (I) CF2=CF-O-Rf (I) wherein Rf is a C1-C6 perfluoroalkyl group and wherein the molar amounts of said recurring units are relative to the total moles of recurring units in said polymer F.

IPC 8 full level

C08F 214/26 (2006.01)

CPC (source: EP US)

C08F 14/26 (2013.01 - EP); C08F 214/262 (2013.01 - EP US); C08F 214/22 (2013.01 - EP)

Citation (search report)

See references of WO 2022106610A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

WO 2022106610 A1 20220527; EP 4247868 A1 20230927; JP 2023551424 A 20231208; US 2023416430 A1 20231228

DOCDB simple family (application)

EP 2021082284 W 20211119; EP 21810629 A 20211119; JP 2023529076 A 20211119; US 202118254020 A 20211119